When were African American soldiers allowed to enlist as soldiers in the Union army?

A) from the beginning of the war

B) only after the Emancipation Proclamation

C) They were never allowed to enlist as soldiers.

D) only after the Union army ran out of reinforcements

B only after the Emancipation Proclamation.

Explanation:

African Americans were allowed to enlist as soldiers in the Union army after President Abraham Lincoln signed the Emancipation Proclamation.

answer

explanation

the given equation is

we can rewrite this as:

let

then the equation becomes:

the factors of 8 that sum up to -9 are {-1,-8}

we split the middle term with these factors to obtain,

we factor by grouping to obtain:

apply the zero product property to get:

but